Having this problem right this second. Phone has been in endless restart mode for hours upon hours, very angry. I-tunes was not syncing my phone after hours on tech support they said hey try to update everything and restore your phone...ok sounds good.
Nope...Now my phone is in much worse condition than it was before. I dropped it a week earlier and the touch id button stopped working. ...now my phone is messed up and will probably have to pay an absurd amount of money just to fix this problem over a stupid feature I rarely use that saves me 5 seconds a day.
Very dissatisfied and angry.